Ex 1.that girl that you brought over was blup.(was ugly,was good for nothin,wasn't getting down,maybe even had a boyfriend..............Ex 2.You was blup for not hitting me up for that dice game. Ex 3. That shirt you wearing is blup

Used as a cuss or after a threat, to instill fear into the heart of the nerdy victim or member of an enemy cru.(Accompanied by hand-gesture implies drive-by connotations) Instant weapon to make you look hard...
(Also see brap; blut)